I am with you on that!
I am a counselor with a social service agency, and we have a small urban garden plot (not big enough for a pumpkin) and a rooftop container garden. It is one of the best therapies, and I love the look of satisfaction when they pick a huge zucchini or tomato, and learn how to cook them up with fresh garden herbs.
Urban gardens are hard to come by here- even as a non-profit we waited years after our application before we got the space.
There's a movement in the inner city to put raised beds in empty lots for the cities poorest, but they can get tied up in court by realtors and land developers who put profit over food security.
There's a Social Enterprise outside of a smaller community who has a couple of acres loaned to them by their city. They teach people with mental health diagnosis how to do agricultural work, then they go get jobs. Produce is donated to the local food programs and sold at the farmers market, generating just enough income to keep the program running. I am often in awe of the great job my colleagues there are doing.